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CA952224A - Intrusion alarm system - Google Patents

Intrusion alarm system

Info

Publication number
CA952224A
CA952224A CA148,050A CA148050A CA952224A CA 952224 A CA952224 A CA 952224A CA 148050 A CA148050 A CA 148050A CA 952224 A CA952224 A CA 952224A
Authority
CA
Canada
Prior art keywords
alarm system
intrusion alarm
intrusion
alarm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA148,050A
Other versions
CA148050S (en
Inventor
Terry E. Tuttle
John C. Schweitzer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DELTA PRODUCTS
Original Assignee
DELTA PRODUCTS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by DELTA PRODUCTS filed Critical DELTA PRODUCTS
Application granted granted Critical
Publication of CA952224A publication Critical patent/CA952224A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/16—Actuation by interference with mechanical vibrations in air or other fluid
    • G08B13/1609—Actuation by interference with mechanical vibrations in air or other fluid using active vibration detection systems
    • G08B13/1618—Actuation by interference with mechanical vibrations in air or other fluid using active vibration detection systems using ultrasonic detection means
    • G08B13/1627—Actuation by interference with mechanical vibrations in air or other fluid using active vibration detection systems using ultrasonic detection means using Doppler shift detection circuits

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
CA148,050A 1971-12-30 1972-07-27 Intrusion alarm system Expired CA952224A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US21391071A 1971-12-30 1971-12-30

Publications (1)

Publication Number Publication Date
CA952224A true CA952224A (en) 1974-07-30

Family

ID=22796993

Family Applications (1)

Application Number Title Priority Date Filing Date
CA148,050A Expired CA952224A (en) 1971-12-30 1972-07-27 Intrusion alarm system

Country Status (3)

Country Link
US (1) US3761909A (en)
JP (1) JPS4879600A (en)
CA (1) CA952224A (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4193055A (en) * 1977-03-11 1980-03-11 Charly Barnum Automatic sensitivity level adjustment
IT1228226B (en) * 1989-01-12 1991-06-05 Brusa Pietro Varese ULTRASONIC VOLUMETRIC ALARM SYSTEM WITH AUTOMATIC SEARCH OF THE OPTIMAL RESONANCE FREQUENCY BETWEEN THE ISSUING STATION AND THE RECEIVER.
NO180611C (en) * 1994-11-10 1997-05-21 Akva As Procedure for detecting feed spill
WO2009133527A2 (en) 2008-04-30 2009-11-05 Ecolab Inc. Validated healthcare cleaning and sanitizing practices
US8639527B2 (en) 2008-04-30 2014-01-28 Ecolab Usa Inc. Validated healthcare cleaning and sanitizing practices
US9157990B2 (en) * 2009-03-04 2015-10-13 Hitachi Medical Corporation Ultrasonic transmitting/receiving circuit and ultrasonic diagnostic apparatus
WO2010143092A2 (en) 2009-06-12 2010-12-16 Ecolab Usa Inc. Hand hygiene compliance monitoring
USRE48951E1 (en) 2015-08-05 2022-03-01 Ecolab Usa Inc. Hand hygiene compliance monitoring
US20140210620A1 (en) 2013-01-25 2014-07-31 Ultraclenz Llc Wireless communication for dispenser beacons
KR20180064951A (en) * 2016-12-06 2018-06-15 주식회사 비트센싱 Linear virtual fence system using radar and reflector
CN110383355B (en) 2017-03-07 2021-08-27 埃科莱布美国股份有限公司 Monitoring module for hand hygiene dispenser
US10529219B2 (en) 2017-11-10 2020-01-07 Ecolab Usa Inc. Hand hygiene compliance monitoring
EP3900307A1 (en) 2018-12-20 2021-10-27 Ecolab USA, Inc. Adaptive route, bi-directional network communication

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2400309A (en) * 1941-10-31 1946-05-14 Baldwin Co Oscillation generator
US2769972A (en) * 1954-03-15 1956-11-06 American District Telegraph Co Method and apparatus for detecting motion
US2950447A (en) * 1955-03-31 1960-08-23 Clarence H Mcshan Electromechanical transducer apparatus and systems embodying the same
US3065455A (en) * 1958-10-07 1962-11-20 Wilfred Roth Detection apparatus
US3597754A (en) * 1968-04-10 1971-08-03 David Herman Apparatus for detecting object movement

Also Published As

Publication number Publication date
US3761909A (en) 1973-09-25
JPS4879600A (en) 1973-10-25

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